WO1994009327A1 - Unite d'entrainement commandable comprenant un moteur a combustion interne et un generateur - Google Patents

Unite d'entrainement commandable comprenant un moteur a combustion interne et un generateur Download PDF

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Publication number
WO1994009327A1
WO1994009327A1 PCT/EP1993/002778 EP9302778W WO9409327A1 WO 1994009327 A1 WO1994009327 A1 WO 1994009327A1 EP 9302778 W EP9302778 W EP 9302778W WO 9409327 A1 WO9409327 A1 WO 9409327A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion engine
drive unit
internal combustion
controllable drive
speed
Prior art date
Application number
PCT/EP1993/002778
Other languages
German (de)
English (en)
Inventor
Jürgen MERTENS
Original Assignee
Icemaster Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE4234340A external-priority patent/DE4234340C1/de
Priority claimed from DE4315362A external-priority patent/DE4315362A1/de
Application filed by Icemaster Gmbh filed Critical Icemaster Gmbh
Priority to EP93922929A priority Critical patent/EP0663057B1/fr
Priority to DE4395100T priority patent/DE4395100D2/de
Priority to US08/416,736 priority patent/US5629568A/en
Priority to DE59305982T priority patent/DE59305982D1/de
Publication of WO1994009327A1 publication Critical patent/WO1994009327A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3208—Vehicle drive related control of the compressor drive means, e.g. for fuel saving purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/025—Motor control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3269—Cooling devices output of a control signal
    • B60H2001/327—Cooling devices output of a control signal related to a compressing unit
    • B60H2001/3273—Cooling devices output of a control signal related to a compressing unit related to the operation of the vehicle, e.g. the compressor driving torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/46—Control modes by self learning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • Controllable drive unit with internal combustion engine and generator
  • the invention relates to a drive unit for a working device, consisting of an internal combustion engine, a working machine driven by the latter and an electrical consumer, the power to be provided fluctuating as required.
  • Suitable working machines for this are, for example, pumps, compressors, generators, gears, etc. in a wide variety of working devices.
  • Such drive units are controlled in such a way that the internal combustion engine switches off when the actual value of a variable to be controlled in the work process exceeds or falls below a predetermined target value, and it is started again when the actual value of the controlled variable exceeds the target value by a predetermined difference, i.e. with a hysteresis, falls below or exceeds, whereupon the internal combustion engine and the drive machine are then operated at full load speed.
  • the object of the invention is to avoid the aforementioned disadvantages and to provide a quiet, environmentally friendly, economical and material-friendly operation.
  • the solution to this problem is that the difference between the actual value of the controlled variable and the setpoint and parameters influencing the controlled variable are measured, the power requirement coefficients of the work process associated with these measured values being used to determine the respective power requirement. Accordingly, characteristic values of a power output stored in a control device are then
  • Engine speed characteristic curve determines a target engine speed that is fed to the internal combustion engine in a speed-regulating manner.
  • An electrical generator is additionally coupled to the internal combustion engine and feeds electrical consumers directly and / or via at least one voltage and frequency conversion device. Three-phase synchronous or asynchronous generators are used. The electrical power is measured and reported to the control device by means of a corresponding signal and added to the power requirement there. Furthermore, it is provided that in the rare cases where there is no mechanical work requirement or only so little that the internal combustion engine produces an unnecessarily high output even at idle speed, the engine is decoupled in a controlled manner. The electrical system continues to be operated by the internal combustion engine. As soon as there is a need for work again, the clutch is switched on again and work starts.
  • the requirement determination is converted into an engine speed, for example by storing table data of a performance characteristic, based on the speed in the control device, the respective optimal speed being determined by a query and possibly also by interpolation from the table values of the characteristic.
  • the setpoint speed is fed to a speed control device of the internal combustion engine as a setpoint signal.
  • the A speed signal taken from the motor is supplied to the control device as an actual signal.
  • the difference to the speed setpoint is then supplied by the control device to a speed actuator of the internal combustion engine.
  • this speed actuator can be, for example, a servomotor for adjusting the stroke of a fuel injection device.
  • the power requirement coefficients of the parameters influencing the controlled variable are determined on the basis of empirical values or calculated exactly, if this is possible. These coefficients are advantageously optimized through a learning program.
  • the internal combustion engine is generally operated at a very low speed close to its lower permissible speed. As a result, it maintains its operating temperature, makes little noise and is highly efficient.
  • the dimensions and performance dimensions of the internal combustion engine can be designed for an average value which is considerably below the peak load if this occurs only rarely, since engines can tolerate such increased peak loads for such a short time.
  • the operating values such as pollutant emissions and fuel consumption, are also optimized for average operation. This brings significant advantages and savings in fuel compared to the usual maximum operating design.
  • this controllable drive unit in cooling devices for a cooling room, in particular the interior of a refrigerated transporter, bus or the like, with an internal combustion engine and a compressor driven by it with a compressor connected to it
  • Coolant circuit which comprises a condenser, an expansion valve and at least one evaporator, the return line of which is fed back to the compressor on the suction side, the cooling capacity being thermostatically regulated by means of an internal thermometer with respect to a predetermined target temperature.
  • Such cooling devices are generally known. They are controlled so that the compressor is switched off when the internal temperature of the refrigerator falls below a predetermined target temperature, and it is started again when the internal temperature decreases the target temperature by a predetermined difference, i.e. with a hysteresis, whereupon the engine and the compressor are operated again at full load speed.
  • This two-point control operation of the cooling device is associated with numerous disadvantages.
  • the engine is often operated at low temperature during start-up, which leads to a reduction in efficiency and increased pollutant values in the exhaust gas as well as increased wear. There is also a high level of noise since the engine is working at full load.
  • condensation occurs on the evaporator at the high cooling capacity, if only a low power is required on average, which leads to an undesirable increase in moisture in the cooled air, which can cause corrosion and is particularly unacceptable for passengers in buses and coaches.
  • the respective cooling capacity requirement is determined from a difference between the measured inside temperature and the target temperature and from a difference between the outside temperature, which is measured continuously with at least one outside thermometer, and the target cooling coefficient and cooling capacity requirement coefficients assigned to these coefficients, and accordingly determined in one Control device stored characteristic values of a cooling power engine speed characteristic an optimal Determined engine speed, which is fed to the internal combustion engine regulating speed.
  • the cooling circuit only requires a small storage container for the cooling medium.
  • the dimensions and the power dimension of the diesel engine can be designed for an average value which is considerable, e.g. 30 - 40%, is below the peak load, which occurs only a few hours a year in extreme weather conditions, because motors can withstand such increased peak loads for such a short time.
  • the operating values, namely pollutant emissions and fuel consumption, are also expediently optimized for average operation. This brings considerable advantages and savings in fuel compared to the usual maximum operating design.
  • the cooling capacity requirement is continuously determined from the difference between the outer skin temperature of the cooling room and the predetermined target temperature, and additionally determined by an internal temperature difference to the target temperature, which is what happens to newly stored items to be refrigerated and, in particular, to heat sources in the cooling room, e.g. People, is required.
  • the energy output of any existing electrical system is continuously monitored and included in the cooling capacity requirement.
  • the comprehensive cooling output requirement report makes it possible to adjust the compressor speed as precisely as possible to the respective requirement, so that there is practically no need to shut down the driving motor.
  • the determination of demand is converted into an engine speed or compressor speed, for example by storing table data of a cooling capacity characteristic in relation to the speed in the control device and determining the respective optimal speed by querying and possibly additionally interpolating from the table values of the characteristic.
  • the setpoint speed is fed to a speed control device of the internal combustion engine as a setpoint signal.
  • the speed controller can also be an integrated part of the control device.
  • a speed signal taken from the motor or compressor is supplied to this as an actual signal.
  • the difference to the speed setpoint is then fed from the control device to a speed actuator of the diesel engine.
  • This speed actuator is e.g. an actuator for stroke adjustment of a fuel injector.
  • an electric three-phase generator is coupled to the drive motor, which operates the blowers on the evaporator and on the condenser, which is of great importance particularly when a vehicle is stationary. Since the motor only rotates slowly when the cooling power is low, the generator also produces a three-phase current of low frequency, so that the fans also rotate slowly to match the low cooling requirement and consume little energy and produce little noise.
  • the generator can also advantageously feed an electrical system of the bus or vehicle via a voltage and frequency conversion device, so that the main engine can be switched off even during long stays and the air conditioning unit motor with the generator supplies the lighting, the music system, etc. via the converter.
  • the generator is permanently coupled to the drive motor and the compressor is connected to it via a controllable coupling.
  • the clutch can be released, the electrical system continuing to be operated by the drive motor. As soon as cooling is required again, the clutch is switched on again and cooling mode is started.
  • Radiation absorption coefficients as well as from empirical values of the heat transfer from the outside air to the surface at standstill and while driving. When commissioning an entire device, the coefficients are determined on the basis of empirical values. These coefficients are advantageously optimized by a learning program, which incrementally depends on the occurrence of the need to shut down the cooling unit and depending on whether the set temperature is exceeded by a predetermined value for observation periods that are greater than the thermal time constants of the heat transfer through the insulation layer Corrected below and above counteractively corrected and thus successively optimized.
  • Compressor is switched off and the operation of the evaporator is operated with a moderate evaporation capacity, so that there is practically no icing and the increase in air humidity in the exhaust air from the evaporator is only limited.
  • the generator frequency is regulated via the control device within the permitted frequency bandwidth and thus the output voltage and the current via the engine speed of the internal combustion engine so that the electrical power of the generator corresponds to the current load requirement.
  • controllable drive unit is of interest wherever machines are used which require electricity and are used in alternating locations with and without a mains connection. If there is no mains power connection, the power is supplied by the generator with speed-controlled internal combustion engine.
  • the controllable drive unit can also be used advantageously in connection with a wind power plant.
  • FIG. 1 is a block diagram of a first embodiment
  • FIG. 2 is a block diagram of a second embodiment
  • Fig. 3 is a block diagram of a third embodiment.
  • Fig. 1 shows an internal combustion engine (VM), which is usually a diesel engine, to which a working machine (AM) is flanged, which drives a working device (AV).
  • VM internal combustion engine
  • AM working machine
  • AV working device
  • a control device (ST) is provided, which is connected on the input side to an actual value sensor (Ml) for a controlled variable and one or more measured value sensors (M2) for parameters (PW) influencing the controlled variable.
  • M2 measured value sensor
  • SW measured value sensors
  • SW setpoint
  • the control device (ST) contains a suitably programmed microprocessor which contains in its memory power requirement coefficients and a table which correlates the speed of the work machine (AM) with the work performance.
  • the measured actual value (IW) of the controlled variable and the measured parameter values (PW) are assigned power requirement coefficients in accordance with the predetermined target value (SW).
  • SW predetermined target value
  • SI actual speed signal
  • Control device an output signal (SD) which directly actuates a speed actuator (DRS) of the internal combustion engine (VM). If it is a matter of controlling a diesel engine, the speed control element (DRS) preferably specifies the stroke of the injection device with a servomotor.
  • the charging current for the accumulator (AKKU) flows through a charge control circuit (LK) and is interrupted by the latter when the accumulator (AKKU) is fully charged.
  • the converter (UF1) and / or the accumulator (ACCU) feed a further converter (UF2), which outputs a specified voltage with a specified frequency (e.g. 220 V, 380 V and 50 Hz, 60 Hz) one or more consumers (VI ).
  • a current measuring device IM1
  • the measuring signal of which is proportional to the electrical power drawn and which is supplied to the control device (ST) as a further input signal for the power calculation.
  • a further current measuring device IM2 is provided, which determines the electrical power drawn from the accumulator (ACCU) and the converter (UF1) and whose measurement signal is also fed to the control device (ST).
  • a clutch (K) is arranged between the working machine (AM) and the internal combustion engine (VM) and can be actuated by the control device (ST). In this way, the work machine (AM) can be uncoupled when there is no need for mechanical work. However, the generator (G) continues to be driven by the internal combustion engine (VM). In order to compensate for the power peaks occurring on the generator (G) when uncoupling and coupling the working machine (AM), the generator (G) is preferably equipped with a flywheel of appropriate mass.
  • the accumulator (ACCU) is used for buffering in the event of load fluctuations until the internal combustion engine (VM) is readjusted. For this, it can be relatively small. However, it can also be used for bridging in the case of frequent, long, low-load cases, in which the internal combustion engine (VM) is switched off and is automatically started electrically by the starter (START) before the battery (discharged) is discharged.
  • control device In addition to the setpoint (SW), calculation coefficients and a lower or upper limit value for the controlled variable can be entered into the control device (ST) via the input keyboard (ET). Furthermore, an output device (A), for example an LCD display, is provided for displaying the respectively predetermined setpoint (SW) and the respective actual value (IW).
  • SW setpoint
  • IW actual value
  • the converters (UF1, UF2) are preferably equipped in a known manner with semiconductor switches, capacitors and chokes, so that no mechanical wear parts are contained.
  • controllable drive unit in particular for cooling devices, is shown schematically.
  • Fig. 2 shows an internal combustion engine (VM), which is usually a diesel engine, to which a compressor (2) is flanged, which feeds a coolant circuit.
  • VM internal combustion engine
  • the coolant is compressed in a condenser (7), from which the condensate runs into a condensate store (6), from which it enters the evaporator (4) via an expansion valve (5), from where the expanded coolant gas enters the compressor on the suction side flows back.
  • the evaporator is located in the cold room (R), which is surrounded on all sides by insulation (I).
  • the cooling space (R) is an interior of a bus
  • the outer skin is of course partly made of glass surfaces, some of which are permeable to heat rays are so that the radiant heat must be dissipated by the cooling device.
  • Associated fans (40, 70), which are electrically driven, are provided for the effective removal of cold or heat from the evaporator (4) or from the condenser (7).
  • the memory (6) is designed with a very small capacity comparable to conventional cooling systems, since the cooling device runs continuously and therefore coolant storage is practically not necessary.
  • a control device For the ongoing cooling output calculation, a control device (ST) is provided, which on the input side with an internal thermometer (TI), several external thermometers (TA) arranged on the outer skin of the cooling room (R), one or more thermal radiation meters (SM), which are especially assigned to the window surfaces , connected.
  • the control device (ST) there is a suitably programmed microprocessor, which contains the performance coefficients in a memory and a table which represents the correlation of the compressor speed to the cooling capacity.
  • the control device (ST) feeds with a signal (SD) representing the target speed, a speed controller (DR), to which, on the other hand, an actual speed signal (SI) is fed, which with a speed meter (DM) from the compressor or Motor shaft is removed.
  • SD signal
  • SI actual speed signal
  • DM speed meter
  • the difference signal of the speed controller affects the supply of the internal combustion engine.
  • Fig. 3 shows a further embodiment of the device, in which an electric generator (G) is arranged on the motor shaft, which is preferably a three-phase generator. This feeds the three-phase fans (40, 70) so that their speed is proportional to the motor speed and thus proportional to the cooling power requirement.
  • the generator (G) feeds a converter (80), which emits a standardized voltage with a standardized frequency, which an on-board electrical system (V) also carries Consumers, such as lamps, music systems and signaling devices.
  • the vehicle electrical system (V) is routed via a current measuring device (IM), the measuring signal of which is proportional to the electrical power consumed and is supplied to the control device (ST) as a further input signal for calculating the cooling power.
  • IM current measuring device
  • the function of the speed controller is integrated in the control device (ST), which is why the speed measurement signal of the speed meter (DM) is fed into the control device (ST) as a further input signal.
  • the output signal of the control device (ST) directly actuates a speed control element (DRS) which, if it is a matter of controlling a diesel engine, preferably specifies the stroke of the injection device with a servomotor.
  • DRS speed control element
  • a keyboard (ET) is connected on the input side of the control device to enter the various cooling requirement calculation coefficients, which include the surface sizes, the specific insulation values, the window areas, the specific radiation absorption, etc., and the compressor characteristic in relation to its speed Microprocessor is operated.
  • the desired target temperature and the lower temperature limit value are also specified via the input keyboard (ET).
  • An output device (A) for example a digital display, is used to check the entered data and to display the respectively specified target temperature and the respective internal temperature.
  • a clutch (K) is arranged between the compressor (2) and the motor (VM), which clutch can be actuated by a control signal from the control device (ST).
  • the electric generator (G) can be operated by the motor (VM), even if none at all
  • the fan (40) transporting the cooling air from the evaporator (4) into the cooling space (R).
  • the converter (80) is preferably equipped in a known manner with semiconductor switches, capacitors and chokes, so that it contains no mechanical wear parts.
  • the output voltage (U ⁇ ) is proportional to the speed at which the generator (G) is driven.
  • the output voltage (U A ) of the generator (G) is adapted to the current load by changing the speed of the internal combustion engine (VM) driving the generator (G).
  • the associated frequency change does not impair the function of the electrical consumers within the permitted frequency bandwidth.
  • the generator output voltage (U A ) is measured and fed to the control device (ST).
  • the control device (ST) determines a generator target voltage (Us) from stored generator characteristic data and from the generator frequency (f).
  • the generator (G) is regulated via the frequency (f) in such a way that it is operated at the lowest load near the lower frequency (f-j) and the set frequency (fs) is increased as the power requirement increases (I). This is expressed in the following equation:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

L'invention concerne une unité d'entraînement pour un dispositif de travail, qui comprend un moteur à combustion interne (VM) et une machine de travail (AM) entraînée par ledit moteur. Le rendement effectif est réglé en fonction d'une valeur théorique, prédéfinie pour une grandeur réglée dans le mode opératoire, au moyen d'un détecteur de mesure de valeur réelle (M1) pour la grandeur réglée. A cet effet, on obtient la puissance nécessaire à partir d'une différence de la valeur réelle (IW) et à partir des paramètres (PW) qui influent sur la grandeur réglée et qui sont mesurés en continue avec des détecteurs de mesure de valeur de paramètre (M2) appropriés et à partir des indices de puissance nécessaire associés à ces valeurs mesurées. Un dispositif de commande (ST) permet ensuite de déterminer un régime théorique optimal du moteur, qui est transmis à un organe de réglage du régime (DRS) du moteur à combustion interne (VM). Un générateur de courant triphasé (G), qui alimente des consommateurs électriques (V1, V2) directement et/ou par l'intermédiaire d'un circuit convertisseur (UF1, UF2), est couplé au moteur à combustion interne (VM).
PCT/EP1993/002778 1992-10-12 1993-10-11 Unite d'entrainement commandable comprenant un moteur a combustion interne et un generateur WO1994009327A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP93922929A EP0663057B1 (fr) 1992-10-12 1993-10-11 Unite d'entrainement commandable comprenant un moteur a combustion interne et un generateur
DE4395100T DE4395100D2 (de) 1992-10-12 1993-10-11 Steuerbare Antriebseinheit mit Verbrennungsmotor und Generator
US08/416,736 US5629568A (en) 1992-10-12 1993-10-11 Controllable drive unit with combustion engine and generator
DE59305982T DE59305982D1 (de) 1992-10-12 1993-10-11 Steuerbare antriebseinheit mit verbrennungsmotor und generator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4234340.2 1992-10-12
DE4234340A DE4234340C1 (de) 1992-10-12 1992-10-12 Verfahren und Vorrichtung zur Regelung einer Kühlvorrichtung
DE4315362A DE4315362A1 (de) 1993-05-08 1993-05-08 Steuerbare Antriebseinheit mit Verbrennungsmotor und Generator
DEP4315362.3 1993-05-08

Publications (1)

Publication Number Publication Date
WO1994009327A1 true WO1994009327A1 (fr) 1994-04-28

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PCT/EP1993/002778 WO1994009327A1 (fr) 1992-10-12 1993-10-11 Unite d'entrainement commandable comprenant un moteur a combustion interne et un generateur

Country Status (4)

Country Link
US (1) US5629568A (fr)
EP (1) EP0663057B1 (fr)
DE (2) DE4395100D2 (fr)
WO (1) WO1994009327A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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WO2003072378A1 (fr) * 2002-02-26 2003-09-04 Dometic Applicances Ab Contrôle de puissance

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DE59305982D1 (de) 1997-04-30
DE4395100D2 (de) 1996-02-22
EP0663057A1 (fr) 1995-07-19
US5629568A (en) 1997-05-13
EP0663057B1 (fr) 1997-03-26

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